Cutting and welding torch.



A. F.1ENKINS,

CUTTING AND WELDING TORCH APPucmoN msn Ammo. me.

Panama Jul'y 30, 1918.

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alla: n xya/ UNITED STATES PATENT OFFICE.

ALEXANDER F. JENKINS, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE ALEXANDER MILBURN COMPANY, OF BALTIMORE, MARYLAND, A CORPORATION OF MARYLAND.

CUTTING AND WELDING TORCH Application filed August 10. 1916.

To all whom may 00mm/rn.'

15e, it known that, I. ALEXANDER F. JEN- luxs, a citizen ot' thiI United States, Vand residing atj lhxltiniorc. State of Maryland. have inveiitetl certain new and useful Improvenients in Cutting and Vt'elding;r 'l`.irehes. ot' which the following is a specitica-tion.

This invention relates to cnttihg and weld` iner torches generalliy and has particular ret erencey to ilnln'ovenients in oxy-acetvlene eutting and welding torches in which a mixture of oxygen and acetylene is used for heating the material to he welded when the torch is used t'or welding purposes. and in which a jet ot' pure oxygen is used with the preheating gases when the torch is employed t'or cutting purposes.

The principal object ot' nity invention is to provide a portable appliance otl the above type which may h v a simple adjustment, he converted t'roin` a cutting torch into a weldiner torch or vice versa, lt has heenthe purpose to accomplish this ohject hy using the saine torch for hoth cutting,lr and welding pn rposes.

A\not'her object has heen to provide a siniple means for securely attaching the tip tvo the torch head lint which attachingr means will admit ot ready release for the adjust nient of the tip with respect to the torch head.

Another ohjeet of the inreiition is to pro vide a. simple quick acting valve for enntrolling the supply ot' cutting oxygen to the torch head.

)ther objects and the novel features of my invention will be apparent from the following description taken in connection with the drawing, in which Figure 1 is a topi plan view of a` --torch embodying my invention, parts thereof being broken away, parts being shown in section, and other parts being shown in dotted lines.

Fig. 2 is a side`w'iew of the same partly in elevation and partly in section;

Fig. 3 is' a transverse cross section on the line 3-3 of Fig. 1;

Fig. 4 is a transverse cross section on the line 4--l of Fig. 1;'

Fig. 5 is a cresci section taken on the, line 5-5 of Fig. '2 Showing the construction of a part of the head and tip` Figs. 6, 7 and 8 are topplan vlews of the tip showing its three different.positions wit-h reiki ert; to thel head to which it is attached;

Figs. J and 1t) are enlarged longitudinal Specification of Letters Patent.

atented July 30, 1918.

Serial No. 114.211

cross seetional views of the Lip` the views heing taken at right angles to each other through the center of the tip; .b

lt`ig's. 11 and 12 are respeetively a side view of another torch head and a plan of the working face, thereof viewed from below, this head also embodying;r in v invention; and

n Figs, l and 11 are respectively a top plan view and a side elevation of a tip attaohahle, to the toreh head shown in Figs. 11 and 1;. the passages in Figs. 11 and 1t beiner shown in dotted lines.

Referring to the drawings. and to lt`ig's. 1 and 2 in particular'. the torch consists of a handle portion which is madey up ot' a front casting 15 and a rear casting 11S which Connected together and held in spaced rela tion :h v a tubular nieta] shell 17. rThe rear ,casting or member 16 has attached to it a, ronpllngr 18 to which the oxygen supply pipe. or tuhe is attaohed and helow the coupling 1h there is a .valve easing 19 for controlling the How of acetylene from the. coupling 2o i to the pipe 21 which leads the. aeetylene to the passage 22 in the front casting 15, The oxygen supply and acetylene supply are delivel-ed under pressure. through tubes which are attached to the `Coupling; members tri and 20.

The. acetylene Hows 'from the pasa-age z2 into the annular chamber whieh forms a part of the mixing eliain'oer of the tom-l and Continues into an annular chamber ".541 in` a plug` lneinlmr 25 which is secured into the front, end of the. east-ing 15 and eonstitntes a part of the injector mixing deviee. The nozzle 2G constitutes the other partr ot' the injector mixing device and extends into the chambers 23 and 2l and is secured at its rear end into the casting: 15. The nozzle 2V has a central passage, 27 therein which is' restricted at '2S and discharges from there into an outwardly flaring eoaxiah passage The passage 27 in the nozzle. 211 carries the oxygen which is mixed in the passage 2! with the acetylene drawn from the ehaniher Q4. The oxygen for the mixture is derived from a passaget) which connects the passage 2i' with a pipe 31 extending through the shell 17' to the rear casting4 ltv and connected with the coupling member 1S. ueedh` valve i12 is arranged so as to control this tlow ot' oxygen through the passage Ih) to the mixing device. The ypassage 29 ot' the mixing de vice/is coiniected at its outer end with a pipe 33 which has its other end connected to the toreh head 34, and the mixture from the pipe 33 passes throfu lrh a mixture paesage 35 in the head and is c iseharged at the outlet 3G into a suitable port in the tip 37.

The torch head 34 also has a passageway 38 therein which is Connected by a pipe 39 with evi/passage 4U in the front casting l5. Referring t0 Fig. 3, the passage 40 is conM neeted to a passage 4l which leads downwardly and to one side of the mixingr chamber 23 and to a valve chamber 4-2. In Fig, l it will be seen that the valve chamber 42 is connected by a passai/:e 43 with the oxygen snp ply pipe 3l. In order to control the iiow of oxygen to the cutting oxygen passage 38 in the head, l have provided a quick noting valve which has a sten. M provided at. its` inner end with a tapering part l5 to tit the valve seatl in the chamber Between ite ende, the stra 4l is provided with a coinparativr-ly .shortV steep sorew thread it which iits a rorrespondinj :rew thread in an annular n'leinhez 1li" .infrared into the opening in tlntasting 15 in whirh the valve is litted. rIlle str-ew thread 4b ir.' rectangular in ernst; section and etanparatifely large so as not to hind. and being steep it 'will quickly open and elose the port 4h when the stein 44 is turned. The turning' means for the valve eonsists of a right angle arm 49 which extends rea rwardly to a point where it can be engaged hy a finger of the hand holding the tool. The arin t) may be raised and lowered manually as desired but in order to provide for instantly opening' the valve a springl 50 is provided whioh Surrounds the valve stem #lei and ears against thi` cap 51 and also against a part nl. the alui 49 thus tending to pull the stein outwardly` The ends 501 and Snif of the Spring respectively engagethe plug ineinher i5 and t'he handle 49 tending` lo turn the latter when it is released. The means for looking the valve 44 in closed position consists of a tri ger 52 which is pivoted intermediate its ents on the operating arin fl-l and has an ond which engages the ratchet teeth 53 foi-ined on the Casting!l l15. By pressing against the head 54- of the trigger 52 the end of the same will he drawn out of enrangementy with the ratchet teeth 53 and the tension of the spring' 50 will quickly turn the valve to its open position and admit euttingf oxygen to the toreh head.

The cutting oxygen passage 38 leade` to an outlet 55 which is located in the bottoni liat face formed on a reduced' portion 57 of the head, the head beini L-Shaped so as to bring the face 5G parallel to the surface aefiinst which the jets are directed. The rediavd part a7 of the head has a pin 58 c xlending laterally therefrom to engage in any one. oi' the noteheat), (t0, or (51 in the Hanne (32 at The flange (52 forms A1 circular recess or "soffhet lo receive the reduced portion 57 of' the upper end ot the tip 37.

the head and its upper edge engages against the shoulder 63 on the head. The tip 37 is rovided with an exterior shoulder 6l which Ais adapted to he engaged by an intui'ned of the lower und of the tip. llhe top face 66 i of the tip is substantially itat and has two segginenlal ieresses or ports and Tl lorined therein. The port 70 is Connected by short oblique passages with the passages: t?? and 69 whereasI the port Tl leads through a short oblique passano to the ventral pa sagre liti When it is desired lo have the outlets of the passages iii. liti and, (itl extend longiudiiially ol iinl lool, as ie the` aan when entting toward and away from the operator; ihrtip is titled against the head so that. the iiotch GO thereof will engage the pin 58. This arrangement is illustrated in Fig. ti and in that position the tip will loe locked so that it is preventtal from turning in either direeti on independent-ly of the head. ln this position the paseages 67 and (il) will discharge `iets-of preheating gas beingr con neeted by the port (0 with the oxygen and acetylene pass-ige 35 of the head 3'. The port or reress 7l which is Connected lo the` central passage G8 will. register with the outlet 55 in the head S-l and cutting oxygen will issue from the outlet of'the paesaggio (S8.

l), looeening the lorlr nut (I5, 'dropping the notrh (3U out of engagement with the pin 5h and .turning the tip through an angle Vof KJ so as to bring the notch 6l in register with the Jin 58 and then raisingthe tip so that. the pin 58 lits in the notch (31 and tight- `ning the loeli nut (i5, the outlets of the passages (i7, 68 and (it) will be adjusted so as to extend in a line transversel. of the center line of the torch. This position of outlets is desirable when the torch is used for eutting in a lini, ar-ross a plate of material from left to right or rightio left. In this position the recesses or ports 70 and 71 in the top face (5G of the tip will register with the oxygen and acetylene mixture outlet 3U and with the oxygen outlet 55 respectively and the oxygen will issue from the outlet ln the passage GS while the mixture will issue from tho outlets o'l' the passages (i7` and 69.r

ly releasing; and. adjusting the tip as above but instead bringing the pin 58 into engagement with the not-eh 5l), the` recess 71 in the lop face Gti of the tip will bo brought into-registri: with the mixture outlet'y 36 in me head, and since the recess 71 is in coinmunication with the center passage 68 of the tip the Welding or heating mixture front the' outlet 36 will flow through the renter assage 68 in the tip instead ot through the ateral passages 67 and (59. When the tip is adjusted in thieI position the other port 70 in the tane (S6 will not register with tht oxygen outlet 55 in the torch head hut a portion ofthe fiat surface GG will rover the` oxygen outlet 55 and completely hlorlt thtl passage ot' oxygen through the cutting oxygen passage in the head. By adiustlngg` the tip in the manner last mentioned, the preheatingY or Welding gas is discharged troni the most desirable point in the tip, that is, from approximately the Center thereof.

In Figs. ll to l-'l l hartl shown another form of head and tip embodyingmy invention. The torch head IH shown in Figs.. 11 and i2 is similar in shape to thil torch head 34 and may he substituted tor it on theA tool shown in Figs. l and L. The head 3l" has an oxygen passage 72 leading from tho pipe Socket 73 and provided with lirnnehrs 7l and. T5, terminaiting, in outlets 'lo and TzT in the bottoni fat-e 78 ot' the reduced portion 79 ot the head. The head. i-l also has a passage 80 for the welding gas such as a mixture of oxygen and. aretylene. The pae-4 sage 80 leads from a pipe sooket ttl to the branch passages 852 and B3 which terminate in outlets 84 and 85 in the bottom tace TH. The reduced .part 79 of the head 3l adapted to fit into the soeliet 86 formed in the top end of the tip 3? by the tlange (59". The tip 37" has an exterior Fihonlder HT 'engageahle hy an inturned fiange on locking nut, similar tothe locking nut G5, adapted to engage the threads 88 on the head 34 t0 secure the tip to the head, Yhen the tip is secured to the head, the tare TH on the head will abut against the bottom face Sii in the socket 86 and a pin 90 on the head will engage in one of the three spaced `notchesfl', 92, or 93 in the fiange GQ. The

tip has'three passages 94, 95 and 9 6 which extend longitudinally of the tip and terminate in alined outlets at the lower end thereof, thelpassage extending centrally of the tip throughout most of its length having its outlet at the center of the tip. -The tips 3T and 3T are substantially eirc'ular in cross section. The inlet port 97 of the passage 95 is located at one side of the center of the top face 89 and it is adapted to register with either orte of the outlets 76 or 77 in the head 34. depending on Whether the pin 90 is locked in engagement with the notch 91 or 92. The passages 94 and 96 are connected at their upper ends to aeonnnon inlet port or recess 98 which extends radially of the top face 89 so that it; may receive welding gas frolh either of theoutlets 84 or 85 in the head 34. This arrangement of ports 97 and 98 provides for adjustment of the out lets ol' the tip at right angles to t-aih other when the appliance is used for uiting purpost-s. li'lnn it is desired to use thev torrh tor weldingn or heating only, the tip is adjusted so that tlul notrh fili is locked iu rin Jugement with the pin Slt! on the head and in this position it will he een that the port 9T will register with tho outlet S5 so that only a weldingg` mixture tions troni thtl head tothe tip and this` gas will liou through the ventral passant 95 and disvhargtfrom tho ventral outlet in the lip. ln this position hoth ot' the oxygen outlets TU and TT and tlvl other mixture outlet Hl in the head 34' will he lilorlced hy llat portions ot thtx fai-o Htl so that no gas :nay est-ape tlwrrtroln :1nd so that the onl iet will he a heating! or welding jet iseuingr troni the outlet ot the passage ifi.

It: will hr sven 'troni the drawings and thtx foregoing description that l have proridad a siniplr manner ot' ntrmhing and looking the iii in plat-w on the head. in the arrnngvnuns shown. i llave provided tips in.' oleane ot which ille oxygen paas-agr in the head may la lilofhrd and the weld-Y ting gas may he dierharged troni the ventral opening4 ui the tips. I `1ntherinore. hy means ot' a single tip and three .simple adjuz-italians, it is possible with the devices here shown to uli-ange the appliances from rutting tort-hes to welding torches or rice tersa. This is an important advantage since it is usually necessary to provide two dii i'erentV torches, one tor welding and one for vatting purposes and also to provide litter-- ent kinds, of lips 'for cutting;A und welding purposes, While l have shown and described the intention in detail I do not' wish to he linx-- ited to the exart Vlf'orni ot' oonstrnotion illustrated as it is olwiouaI that various` changes may lie resorted to without departing t'roni the spirit of the invention.

ll'aring thus described the invention, hat is claimed is:

l. In a Combined tuttinzgr and welding' torch. the eoiuhinalion with. a toroh head haring` passages therein for cutting,r oxygen and for preheating gas or gases, of means whereby said torch iS readily changeable from a weldingr torch to a cutting torch or rice versa, said means inrluding a tip attachahle to Said head in any one of a plurality of different positions. the cutting oxyf gen passage in the head heiiugr closahle hy be readily changeable from u welding torch" in the head boing closable by said tip when the tip is adjusted so that the probl-ating gas discharges from said central outlet.

3. In an Oxy-acetylene cuttingr and welding torch, the combination with a torch lic-.nl having passages therein for cutting oxygen and for a mixture of oxygen and acetylene, of means whereby said torch readily ronvcrtible from a welding torch to a cutting; torch or vice versa, said means comprising a tip having a plurality of passages extending,f longitudinally thereof, one oi said passages having its discharge outlet barata-fl autismo tially at the conter of the tons-i' end. of the tip, and means for attaching said. tip il: .sai-l head in any one of a plurality of tliilerent positions, the cutting oxygen boing discharged from said central outlet in the tip when the tip is in one iosition and the mixture of acetylene an oxygen being discharged from said central outlet, when the tip is in a dilerentposition.

4. In an Oxy-acetylene cutting and weld ing torch, the combination with a torch head having passages therein for cutting oxygen and for a mixture of oxygen and acetylene, of means whereby said torch is readily convertible from a welding torch. to u cutting torch or vice versa., said moans comprising a tip having a plurality of, passages extending longitudinally thereof. one ot said passages having;r its discharge outlety located substantially at the center of the lower end of the tip, a nut for securing the tip to the head, and means for locking said tip in an one of a plurality of dierentpositions, t ie cutting oygen being discharged from said central ou let in the tip when the tip is in one position and the mixture of acetylene and oxygen being discharged from said central outlet when the tip is in a. different position;

5. In a Welding and cutting torch, the combination of a head having passages therein for oxygen and for a mixture of oxygen and acetylene, a tip having two or more passages therein, one of which is disposed centrally of the tip throughout most of its length and at its outlet, and means whereby the tip may be clamped to said head so as to connect said central passage to either of the passages in the head.

6. In a welding and cutting torch, the combination of a head having two passages therein, one for oxygen and the other for a mixture of oxygen and acetylene, a tip having two or more )assages therein, one of which is disposed centrally of the tip throughout most of its length and at its outlet, and means whereby the tip may be clamped to said head so as to connect the oxygen and mixture passages in the head to the central and other passage or passages in the tip respectively, said tip being construrtod and adjustable so as to close the' oxygen passage in theI head and to connect the mixture passage in the head to the central passage of the tip.

7. In a torch, the combination with ii so torch head havinor passages therein for cutting oxygen and isiir prcheating gas or gases, of a tip provided with la passage extending longitudinally thereof, said head and tip having interlocking members arranged and g5 adapted to locate and hohl the tip in any one of a plurality of positions relatively to [lu` lufrul` and moans t'or securing thc tip to thi` hcml iu any one of such positions, for the purpose set forth.

14. lu :in ox ,-at.etyle|io torch. the combi nation with a torch head having passages tlierein for cutting,r oxygen and for preheating gas or gases, of a tip provided with a passage extending longitudinally thereof o and means for securing said tip to said head in any one of a plurality of positions to bring said passage in the tip into communication with either of the passages in the head, said securing means comprising u pin and notch connoctionbbetween the tip and head. to prevent the turning of the tip in either direction independently of the head when the parts are secured together, and a locking ring for clamping the tipagainst the head,

9.1n a torch,the combination with a torch head havin passages therein for clitiing oxygen and ihr preheating gas or gases, ofa tip provided with a passage extending 1w longitudinally thereof, said-head and tip hating a cooperating projection and seriesof notches arranged and adapted to locate` and heid the ti i in anyone of a plurality of positions re atively to the head, and means for securing the tip to the head in any one of such. positions, for the purpose set forth, p y

10.1n a torch, the combination With a torch head havin v passages therein for cutting oxygen and or preheating gas or ases, of a tip provided with a plurality o passages extending longitudinally thereof and having three alined discharge outlets at the lower ond thereof, and means for securing 126 said tip tio-said head with said three outlets in either one of two positions at right angles to each other, said tip being so constructed and adjustable as to bring the passage thereof having the centraloutlet into communication with either of the passages in the head.

ll. ln a torch, the combination with a torch head having passages therein for cutting oxygen and t'or prehcating gas or gases, of n tip having a recess in the top thereof and a passage extending longitudinally of tlnl tip troni said rei-ess and having its outlet at the lower end of the tip, and means for securing said tip to said head, a parl of the top oi' said tip being adapted to completely block the cutting oxygen passage. the tip living so constructed and adjustable as to bring said recess in register with one or niort nly said passages in the head.

l::`. ln :1 torch. Ilnx combination with a torch laad timing passages therein ior euttixig tnv-jin and for prehcating gases, ot' a tip iufm ai with :i plurality of ports in the top tin-r-fol', said tip also iaving passages mini-rieti rit h said ports and provided with outlets at the lower end of the tip, and means tor 1-rruring said tip to said head, said tip and head being so constructed and relatively adjustable as to bring one of said ports into communication with either the cutting oxygen or preheating gas passages in the head.

l5. ln a tort-h` the combination with a' torch head, of a tiphavingan exterior shoulder near its upper end, a device for clamping the tip to the torch head, and cooperating means on said head and tip for locking the tip in any one of a plurality of positions to prevent it from turning in either direction with respect to the torch lira-l when clamped thereto, for the purpose set, forth.

'it In si tori-h, the combination with a torch head, of zi, tip having an exterior shoulder near its upper end and having gas passages extending longitudinally thereof and recesses in the top communicating with said passages, a nut for clamping the tip'to r the head, and cooperating means on `Said head and` tip for locking the tip in any one of a plurality of positions to prevent it from turning in either direction relatively to the torch head when the tip is attached to the head.

15. 1n a. torch, the combination with a torch head, of a tip, meansnear `the upper end of said tip adapted to cooperate with a suitable device for clamping the tip to the torch head, said tip having also a plane upper face and passages extending longitudinally thereof' ending atthe bottom of the tip in a series of discharge outlets, the intermediate outlet being located substantially at the center of the end ofthe tip, andtwo ports or recesses, in the upper face of; the tip, one of said ports communicating through one of said passageways with the central outlet and the other port communieating witlthe other trwo outlets, and'means for clampingsaili tip to. said head. t

1G. In a welding and cutting torch, tht` combination willi a torch head having pas-A sages therein for cutting oxygen and for prrheating gas or gases, ot a tip provided with a passage having a substantially radial inlet port in its top face and an outlet at the lower end thereof, a part'ot' said top face being adapted to completely obstruct the ont let olvl thel cutting oxygen passagtnsaid inlet port being adapted to receive gas' from ontl ot' the passages in the torch head.

17. A tip for oxy-acctylinc or .similar torches, said tip having a llat upper face and having an elongated substantially radial outlet port, in said face, and a passage ex tending longitudinally through said tip and opening into said port nt one vnd thereof` 18. In an oXy-acetyleintorch, the eonibination with a tort-h head haiing a passage therein for cutting oxygen, and two passages for preheating gas or gases. said passages opening in the face ol a reduced portion ol` said torch head, of a tip provided with a Socketiadapted to receive the reduced portion of said head, and also provided with a passage having an inlet in the bottoni oi' said socket and an outlet atthe lower end of the tip, the inlet of the passage in the tip being adjustable to receive gas from either one of the preheating gas passages in the head, and means for securing said tip to said head.

19. In an oxyacetylene torch` the combination with a torch head having passages therein for cutting oxygen and for preheatingr as or gases, said passages opening `in the ace of a reduced port-ion of said torch head, of a tip provided with a socket adapt4 ed to receive the reduced portion of said head, and also provided with e, passage having an outlet at its lower end centrally of the tip and an inlet in the socket at the upper end of the tip, the tip and head being relatively adjustable so as to bring said inlet into .position to receive gas from either of the passages in said head, and ineens for securing said tip to said head.

20. In a, torch, the combination With a head having a passage therein for preheating gas or gases, of a tip having a flat upper surface and having a passage therein provided with an inlet in its upper surface and 4 an outlet at the lower end, and means for securing the tip tn the head so that. the inlet of the tip portion will be disposed out of register with the outlet of the passage in the head so' Aas to arrestn Hash-back and check it before it goes back into the torch proper.

21. In a Welding and cutting torch, the combination with a torch head having passages therein for cutting oxygen and for a mixture of oxygen and acetylene, of e tip provided with a gas passage extending lungiv tudinally thereof, and means for securing said tip to said head in any one of a plurfilily nl' jmsilfinnn, Sniil mann.` im'lnc'ling :i pin anrl noixzll locking ronnrriion between the liuml and ilio tip.

22. ln :in oxynuui View ini-vh, ilu: l'lnnliination with :i tori-li lnmil lnivinp; pnrsngoa therein for rui/lying oxygrn und for prchouing gus or gases, of :l (ip provided with :i SocketY adapted to litY Said lloznl und also provided with a pzlsnzlgv lmvinggy nn inici in (ho bottom of `Qninl sockel, :Mid :in outlet ut the lower end of the Lip, tin,I lvlul n1' thv, passage in tho tip boing :idjnslnlilc lo receive, gua from cil/lier one. of the pzwsng'n in tlm hond, und moans for securing said tip to .unid howl.

23. In n wmliinud Hitting unil welding torch, tlm combination with a torch hond having passages ther-nin for cutting; oxygen and prolieuling gas or gases, of means whereby Suid torch i5 readily clim'igenhle from :i welding torch Lo :i cutting tor/.zh or vico vars, sziiil means including :L tip mmol :ililo to said lwud in :my one of :1 plurality ofi (lill'urnnt positions, said lip uonslitnling a uutting (ip when in ono position, und n. welding Lip when in another position.

ln testimony whcrvof I affix my Signatura.

ALEXANDER FA .l Ei lli. 

